Lubricating apparatus



Aug., 7,1928.

A H. J. MURPHY LUBRICATING PPARATUS' Filed March 14f, 1922 Patentedl Aug. 7, 19.28..

UNITED STATES 'PATENT oFFI'CE.

HOWARD J. MUR Y, or READING, MASSACHUSETTS, AssIGNoR, EY MEsNE ASSIGN- MENTS, To TH CORPORATION or DELAWARE.

BASSICK'MANUFAC'URING COMPANY, `F' CHICAGO, ILLINOIS,

` LUBRICATING APPARATUS.

Application led March 14, 1922. Serial No. 543,657.

2 is a central'longitudinal section through the discharge end of the gun illustrated'in Fig. 1, being partly in elevation and showing the parts in uncoupled relation;

Fig. 3 i's a section like Fig. 2, but shows the parts in coupled relationprior to opening of a valve to vsupply lubricant therethrough; f

Fig. 4 is a View similar` to Figs 2 and 3,

but more in elevation and showing the cou-v pling complete and t-he valvev opened; Fig.. 5 isva section on the line 5 5 of Fig. 2' Fig.7 6 is asection on the line 6--6 of Fig.2;`

Fig. 7 is a section on the line 7--7 of-v Fig. 2;'

Fig. 8 is a view similar to'Fig. 4, but show- '30 ing the relation ofthe operating parts pursuant to coupling but prior to opening of the valve;

Fig. 9 is a view similar to Figs.,4 and 8, i

but showing the relation of theoperating parts in uncoupled relation as in -Fig. 2'; and Fig. 10 is a view similarto Figs. 4, l8 and v9, but showing the relation of the operating parts pursuant t'D uncoupling,` in which pogition the lubricant receiving part ,and the source 'of lubricant may be separated.

Referringto the drawings, I have shown a source of lubricant under pressure typiiied by a. lubricantl gun including a barrel `11 having a rear head 12 into which is threaded the lusual stem 13 carrying atits outer end 'the handle 14 and at its inner end a lubricant-expelling piston of usual/construction.

At the discharge end of the gun, I preferably provide a coupling cooperating with' valve mechanism.` 4

In the preferred form of my invention illustrated, a lubricantreceiving nipple 2() of the form illustrated in my (zo-pending application Serial No. 543,654 filed herewith is provided, adjacent the lubricant-receiving 65,. end thereof, with projecting portions, herein 4shown as three in number and provi'ded by a portion of the nipple generally triangular in cross-section.

The preferred form o-coupling illustrated o0 comprises a retractile coupling part, herein' shown as fa sleeve 22 having an opening in the end thereof to receive the triangular por-`4 1 tion; of the nipple and providin shoulders 23, which may underlie the` ro]ections on the nipple when turned re ativ'e thereto. Within the' coupling `part 22, I have shown a connecting sleeve 24 which can turn relative to the coupling part 22 and which is longitudinally apertured to receive andvlit the triangular part of the nipple and to receive and slidably tit a similarly shaped end l25 ot a sealing part 26'carrying a sealing washer 27.

i In the preferredform of my invention illustrated, the sealing part 2 6 is reciprocable relative to the, front head 290i the gun and i relative to the barrel 11 to permit opening and closing of a Valve 30 carried'by the seal-y ing part 26 n and reciprocable therewith relative toits seat 31, which may conveniently be carried by or integral with the front head 29 of the gun. A spring 32 urges the sealingpart 26 forwarlly and hence urges th'e valve 30 toward its closed position.A

This spring 32 mayvif desired, as illustrated, press toward its seat a sealing Washer 33, shown as 'cup-shaped, and opposing leakage between the sealing part 26 andy the part 29.

The 'operating vmeans :tor the coupling .andfvalve in the preferred forml of my in-4 vention illustrated comprise inclined means between the coupling sleeve22 vand a part 95 'which may be stationary relative to the barrel 11 of the gun, such part herein shown. as an extension from the head 29 presenting .pins 50, 50.' entering similar inclined slots 51, 51 in the coupling` sleeve 22. y 100 lVlien the nipple r20 is entered in the coupling, any turning ofthe sealing part 26 is opposed by the connecting sleeve 24. To limit turning of the' ``coupling sleeve'22v and head 29 relative to the sealing part 26, I have provided stop means between the sealing part 2 6 and the coupling sleeve 22, `such stop means taking the form of pins 60,

60 projecting from the sealing part and adapted to bear against stop surfaces at the ends of a slot or recess 61 in the coupling sleeve 22.

' This slot or recess may also serve to oppose tightening of the couplin before the coupling sleeve 22 has turne suiiciently relative to the nipple 20, and conversely to oppose turning of the coupling sleeve 22 relative to said nipple 2O prior to loosening of the coupling during the disconnecting operation. the slot is positioned to preclude rearward movement of the coupling sleeve 22 relative to the sealing part 26 until after sucient turning movement therebetween has been effected to bring the pins 60, 60 from the position relative to the sleeve 22 illustrated in Fig. 10 to the position illustrated in Fig. 9, after which the indent -70 permits riding of the pins 50, 50 down their cooperating slots 51, 51 to the position shown in Fig. 8, where a tight seal will have been provided by pressure ot' the sealing Washerv 27 against the lubricant-receiving face of.

the nipple 20. During this sealing or tightening operation, the coupling sleeve'22l will have been retracted without turning and the lips 23 will have been pressed against the shoulders behind the projections on the nipple 20.

Further turning of the barrel in clockwise direction will cause the pins 50, 50 to move further down the Vslots 51,drawing forward the head-29 and consequently the valve seat, thus opening the'valve against the pressure of the spring 32.

,When the `hearing has been lubricated to the desired extent, the head 29 may/be turned in a counter-clockwise direction by so turning the barrel. This will first pull the head 29 rearwardly, closing the valve by movement of the pin and slot into the relative position shown in Fig.l 8, and then the seal will'be released by forward movement of the coupling sleeve v22 and the pins and c0- operating slots will assume the relative position shown in Fig. 9. Further turning of the barrel will turn the coupling sleeve 22 relative to the nipple 20 and 'permit withdrawal of the coupling sleeve from over the head of the nipple 20. c

It during vthe valve-closing movement or at any other time, lubricant -should fill the chamber containing the spring 32, such Y lubricant may during the subsequent opening of the valve either be crowded back around the valve stem-or preferably, where a port is provided, opening communication between said chamber and the passage l for carrying lubricant to the nipple 2Q.

c to escape from 'this chamber 'except when" There will be no tendency for the lubricant the valve is being opened, and at this time l atight seal is always provided so no leak- To this end the surface 62 ot" including a retractile coupling sleeve and a.

sealing part retractable by retraction of said sleeve when a lubricant-receiving nipple is entered therein, and detent means positively opposing retraction of said sealing part unthe following til a nipple isI enteredv in said coupling and said sleeve is turned relative thereto.

2. Lubricating apparatus including a lubricant supply device presenting a coupling and a valve, unitary inclined means for actuating said coupling and said valve, and .unyielding detent means positively opposing operation of said`inclined means during coupling until a predetermined relative turning movement of said coupling relative to said element has been eiiected.

3. Lubricating apparatus including a lubricant supply device presenting a coupling and a valve, unitary inclined means for actuating said coupling and said valve, and unf` yielding detent means providing on uncoupling for positive operation of said inclined means prior to relative turning movement between said coupling and a. lubricant-receiving element. A

4. Lubricating apparatus including a lubricant gun having a coupling for engagement with a lubricant-receiving nipple a sleeve surrounding said coupling, tightening means operable by rotation of said -sleeve relative to the nipple and coupling when engaged, and means positively preventing operation of the tightening means until said coupling has been turned to a limited extent relative to the lubricant-receiving nipple.

`5. Lubricating apparatus including a lubricant supply device presenting a-coupling and a valve and unitary inclined means for actuating said coupling and said valve, and

unyielding detent means operatively disposed between said valve and said coupling to prevent operation of said valve prior to initial coupling of said coupling with a lubricant-receiving nipple.

6. Lubricating apparatus including a bricant gun having associated therewith a sealing part, a valve disposed rearwardly of said sealing part,I a sleeve for coupling engagement withv a' nipple, said sleeve movable axially relative to said sealing part during coupling operation thereby to provide a tight seal, coordinate means for preventing turny part to open said valve and means for positively preventing lanyV axial movement of said second sleeve until after ysealing hasv taken place.

7. Lubricating apparatus including a lu bricant gun having associated therewith al 15 sealing part, a valve disposed rearwardly of said sealing art', a sleeve for coupling engagement wit a nipple, said sleeve movable axially relative to said sealing part during coupling operation thereby tov provide a tight sea-l, a second sleeve slidable relative to Asaid first sleeve and sealing part to open said valve after sealing has taken place 'and 0perative means between said lirst sleeve and said second sleeve for positively controllingthe' sequencefof operatlonso that one sleeve cannot move axially relative tol the other until coupling has taken place.

In testimony whereof,vI have signed my name to this specification.

, HOWARD J. MURPHY. 

